EXAFS and 27Al NMR Studies of CaAl2O14H20 Structural Changes Due to Heat Treatments N. Richard, N. Lequeux, R. Cortès et P. Florian J. Phys. IV France, 7 C2 (1997) C2-1069-C2-1071 DOI: 10.1051/jp4:19972139